JP3114469B2 - Electronic component suction device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component suction device used in conjunction with an electronic component mounting machine for mounting chip components on a printed circuit board.

[0002]

2. Description of the Related Art A conventional electronic component suction apparatus is installed on an XY table having an XY drive system for moving chip components of an electronic component mounting machine from a supply location to a predetermined mounting location. Such a conventional electronic component suction device will be described with reference to FIG.

FIG. 3 is a perspective view showing a conventional electronic component suction device, which comprises a suction nozzle 21 for suctioning a chip component (not shown) and a mechanism for moving the suction nozzle 21 up and down and rotating. I have. In FIG. 3, a spline nut 23 and a spline shaft 24 are contained in a bearing block 22, which constitutes a bearing which can slide up and down and rotate. Also, spline shaft 2
4 is provided with a hole for guiding vacuum, and a suction nozzle 21 is attached to the tip of the hole. The suction nozzle 21 is vertically driven by a cylinder 25 and is connected to a spline shaft 24 by a joint 26. The suction nozzle 21 is rotationally driven by a motor 27, and a driven pulley 28 attached to the spline shaft 24 and a drive pulley 29 attached to the motor 27 are connected by a timing belt 30.

[0004]

However, in the configuration of the above-mentioned conventional electronic component suction apparatus, at present, high speed, high positioning accuracy, and miniaturization are required for the electronic component mounting machine.
It had the following problems.

[0005] 1) Since there is only one suction nozzle 21, it is necessary to replace the nozzle by switching the type of chip component, and when an electronic component mounting machine is to be unmanned, an automatic nozzle replacement machine is required.

2) Since the number of suction nozzles 21 is one, it is difficult to reduce the time for mounting a large number of chip components, and if a plurality of electronic component suction devices are installed, the equipment becomes large.

[0007] 3) The suction belt 2 is
1 and the motor 27 for rotational drive, the positioning accuracy in the rotational direction is not stable due to backlash.

[0008]

In order to solve this problem, an electronic component suction apparatus according to the present invention has a suction nozzle at a lower end for sucking a chip component, and a vacuum suction hole provided inside the solenoid valve. A shaft which is connected to a vertically movable shaft, which is coupled to an upper end of the shaft, engages with a positioning pin to perform rotational positioning of the nozzle, and a second claw which is engaged with the positioning holder at a lower end thereof. An electromagnet that is raised and held, a plate that has a first claw abutting on a lower surface of the second claw at a lower end thereof, and that moves up and down via a crank coupled to a vertical slide driving motor; And a rotation driving motor for rotating a driven pulley coupled to the motor through a belt.

[0009]

According to this structure, the entire apparatus can be reduced in size. As a result, a multiple-type apparatus in which a plurality of suction nozzles are arranged and arranged can be constructed to greatly improve productivity. it can. Furthermore, the rotation of each nozzle is performed by engaging the positioning holder with the positioning pin, so that the accuracy of the rotational positioning can be improved.

[0010]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a partially cutaway perspective view showing the structure of an electronic component suction device according to the embodiment, and FIG. 2 is an enlarged sectional view of a portion A in FIG.

1 and 2, reference numeral 1 denotes a bearing block;
Reference numeral 2 denotes a bearing bush fitted on the upper surface and lower surface of the bearing block 1, reference numeral 3 denotes a shaft supported by the bearing bush 4, reference numeral 4 denotes a suction nozzle attached to the lower end of the shaft 3, and reference numeral 5 denotes the shaft 3 In this embodiment, the solenoid valve is a multiple-type configuration in which the above-described configuration is arranged in a straight line.

Reference numeral 6 denotes a motor for driving the suction nozzle 4 to rotate, 7 denotes a drive pulley connected to the shaft of the motor 6 for rotation, 8 denotes a driven pulley connected to the shaft 3 by a pin 10, and 9 denotes the drive. The rotation of the pulley 7 is controlled by the driven pulley 8
The timing belt is transmitted to the 11 is the shaft 3
A positioning holder attached to the upper end of the positioning holder and provided with a groove at a predetermined angle; 12, a spring disposed above the positioning holder 11; 13 a positioning for entering the groove of the positioning holder 11 to rotationally position the suction nozzle 4; It is a pin.

Reference numeral 14 denotes a motor for driving the vertical slide of the suction nozzle 4, and reference numeral 15 denotes a motor for driving the vertical slide.
Reference numeral 16 denotes a plate that engages with the crank 15, reference numeral 17 denotes a slider that connects the plate 16, and reference numeral 18 denotes a first claw that is connected to the plate 16. Reference numeral 19 denotes an electromagnet mounted on the plate 16, and 20 denotes a second claw coupled to a lower end of the electromagnet 19, and the second claw 20 is mounted in contact with the upper surface of the first claw 18. ing.

The operation of the electronic component suction device of the present invention thus configured will be described below.

Normally, the suction nozzles 4 are all in the raised position,
When the vertical slide driving motor 14 rotates by 180 degrees, the plate 16
5, the suction nozzles 4 simultaneously move down to the upper surface of the chip component (not shown).

At this time, the suction nozzle 4 is deflected by a spring 12 disposed at the upper end of the shaft 3 so as to absorb variations in the overall height of the chip component. In this state, the suction nozzle 4 is indicated by a symbol P in the bearing block 1 in FIG. After a plurality of suction nozzles 4 collectively suction a plurality of chip components by vacuum suction through the vacuum suction holes shown in the drawing, all of the suction nozzles 4 are rotated by rotating the vertical slide drive motor 14 again by 180 degrees.
Rise at the same time.

Next, when the suction nozzle 4 sucking the chip component as described above moves to a predetermined position on the upper surface of a printed circuit board (not shown) on which the chip component is mounted, the rotation driving motor 6 is rotated. By rotating the suction nozzle 4, the chip component is rotated to a predetermined angle, and the groove of the positioning holder 11 is engaged with the positioning pin 13 so that the rotation of the suction nozzle 4 is accurately positioned.

After that, the suction nozzle 4 is lowered by rotating the vertical slide drive motor 14 by 180 degrees, and the chip component is mounted on the upper surface of the printed circuit board. Only one suction nozzle 4 is lowered, and the other suction nozzles 4 are held in the ascending position by operating the electromagnet 19, and the solenoid valve 5 is operated into the vacuum suction hole to feed pressurized air. This separates the chip component from the suction nozzle 4 and mounts it on a printed board.

After the chip components are mounted, the vertical slide drive motor 14 is again rotated by 180 degrees to raise the suction nozzle 4, and thereafter the above operation is repeated, so that a plurality of chips are printed on the printed circuit board. This is where components are mounted.

The electronic component suction device of the present invention thus configured has the following effects. (1) Since the entire device can be miniaturized, a multiple-type electronic component suction device in which a plurality of suction nozzles corresponding to the shapes of various chip components are arranged and arranged can be configured. In addition to eliminating nozzle replacement due to switching, the time required to mount chip components is reduced, and a significant improvement in productivity is enabled. (2) It is possible to provide an inexpensive and compact device by adopting a configuration in which a plurality of suction nozzles are vertically and rotationally driven by a single power, and each of the nozzles is vertically selected by using an electromagnet. it can. (3) By providing a rotary positioning mechanism using a positioning pin for each suction nozzle, the mounting position accuracy can be improved. (4) By mounting the solenoid valve near the tip of the device to shorten the air piping, the response time of vacuum and exhaust pressure can be shortened. (5) By reducing the weight of the shaft and the suction nozzle,
It is possible to prevent chip components from being damaged due to acceleration when the suction nozzle descends.

[0022]

As described above, in the electronic component suction apparatus of the present invention, a plurality of suction nozzles corresponding to the shape of the chip component are vertically and rotationally driven by one power, and each suction nozzle using an electromagnet is used. By providing a configuration including a nozzle up / down selection mechanism, it is possible to provide an inexpensive and compact electronic component suction device. In addition, by mounting a solenoid valve near the tip of the device, shortening the air piping to speed up the response time of vacuum and exhaust pressure, and providing a rotation direction positioning mechanism for each suction nozzle In addition, it is possible to increase the mounting position accuracy. In addition, by making the device body more compact, it is possible to install multiple electronic component suction devices in the electronic component mounting machine, and use multiple vacuum suction nozzles according to the shape of chip components to install multiple or multiple types of chips. The components can be simultaneously sucked, one predetermined chip component can be selected from the plurality of suction nozzles at appropriate times, positioned at a predetermined angle, and then mounted on a printed circuit board with high accuracy.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing the configuration of an electronic component suction device according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a portion A in FIG.

FIG. 3 is a perspective view showing a configuration of a conventional electronic component suction device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bearing block 2 Bearing bush 3 Shaft 4 Suction nozzle 5 Solenoid valve 6 Rotary drive motor 7 Drive pulley 8 Follower pulley 9 Timing belt 10 Pin 11 Positioning holder 12 Spring 13 Positioning pin 14 Vertical sliding drive motor 15 Crank 16 Plate 17 Slider 18 First claws 19 Electromagnet 20 Second claws

Continuation of the front page (72) Inventor Hiroyoshi Minato 1006 Kadoma, Kazuma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-5-226887 (JP, A) JP-A-4-217400 ( JP, A) JP-A-4-107999 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H05K 13/04

Claims (1)

(57) [Claims] 1. A vertically movable shaft having a suction nozzle at a lower end for sucking a chip component and having a vacuum suction hole provided therein connected to an electromagnetic valve, and being coupled to an upper end of the shaft and engaged with a positioning pin. A positioning holder for performing rotary positioning of the nozzle, an electromagnet having a second claw engaged with the positioning holder at a lower end thereof to raise and hold a shaft, and a first abutment contacting a lower surface of the second claw. An electronic device comprising a plate having a claw at its lower end and moving up and down via a crank coupled to a vertical slide driving motor, and a rotary driving motor for rotating a driven pulley coupled to an intermediate portion of the shaft via a belt. Parts suction device.